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Sheet processing apparatus and image forming system

a technology of image forming system and sheet processing equipment, which is applied in the direction of electrographic process, instruments, transportation and packaging, etc., can solve the problems of reducing the productivity of the entire system and affecting the performance of sheet conveying

Active Publication Date: 2021-10-19
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach maintains system productivity by evenly distributing sheet conveyance, reducing the impact of wear and dust accumulation on conveyance performance and ensuring accurate alignment processes.

Problems solved by technology

However, some apparatus have been devised so as not to reduce the productivity of the entire system.
As a result, there is a problem that the influence on the sheet conveying performance due to the wear of the conveyance rollers in the paths and the accumulation of paper dust is biased toward the normal conveyance path compared to the second conveyance path.

Method used

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  • Sheet processing apparatus and image forming system
  • Sheet processing apparatus and image forming system
  • Sheet processing apparatus and image forming system

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

Schematic Configuration of Image Forming System

[0035]As shown in FIG. 1, an image forming system 1000 according to the present embodiment includes an image forming apparatus 1 that forms an image on a sheet and a sheet processing apparatus 100 as a sheet processing apparatus mounted on the image forming apparatus 1. The image forming apparatus 1 is an image forming apparatus provided with a so-called intermediate transfer tandem type image forming unit 10 including four image forming units 10Y, 10M, 10C, and 10K inside the apparatus body. The image forming apparatus 1 forms an image on a sheet S based on image information read from a document or image information input from an external device and outputs the sheet S.

[0036]The image forming units 10Y, 10M, 10C, and 10K are units of an electrophotographic system that forms yellow (Y), magenta (M), cyan (C), and black (K) toner images. Since the configuration of each image forming unit is basically the same except that the color of the...

second embodiment

[0064]Next, a second embodiment according to the present invention will be described. In the first embodiment described above, the method for managing the distribution of the sheet passing amount between the lower discharge conveyance path 110 and the retreat conveyance path 111 with a bundle to be post-processed as one unit has been described. On the other hand, the present embodiment is different in that the path switching control is executed so as to distribute the distribution of the sheet passing amount to both paths in one bundle to be post-processed. In the following description, only points different from the first embodiment will be described, and other points will be denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted.

[0065]FIG. 6B is a diagram showing the relationship between the sheet leading edge position and time when the sheet is conveyed through the lower discharge conveyance path by the path switching cont...

third embodiment

[0069]Next, a third embodiment according to the present invention will be described. In the first embodiment described above, the rollers 120 and 121 in the lower discharge conveyance path 110 and the rollers 122 and 123 in the retreat conveyance path 111 are driven by the lower discharge conveyance motor 330 in conjunction with each other. For this reason, the conveying speed of the sheet conveyed in the lower discharge conveyance path 110 and the retreat conveyance path 111 cannot be set individually. The present embodiment is different from the first embodiment described above in that the conveying speed of the sheet conveyed in the conveyance paths 110 and 111 can be set independently. In the following description, only points different from the first embodiment will be described, and other points will be denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted.

[0070]FIG. 9 is a diagram showing a hardware configuration in t...

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PUM

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Abstract

A sheet processing apparatus includes a first sheet conveyance path, a second sheet conveyance path that branches from the first sheet conveyance path at a branch portion on the first sheet conveyance path and merges with the first sheet conveyance path at a merging portion, and a control unit. The control unit controls a guide unit so as to guide a first sheet conveyed first in the sheet bundle to be processed by a sheet processing unit to the second sheet conveyance path, and guide a second sheet following the first sheet to the first sheet conveyance path to merge the first and second sheets in an overlapping manner at the merging portion, and guide at least one of sheets following the second sheet among a plurality of sheets constituting the sheet bundle to the second sheet conveyance path.

Description

BACKGROUND OF THE INVENTIONField of the Invention[0001]The present invention relates to a sheet processing apparatus and an image forming system for processing a sheet.Description of the Related Art[0002]Hitherto, a sheet processing apparatus conveys sheets discharged from an image forming apparatus such as a printer or a copying machine onto a processing tray, and then performs edge alignment (hereinafter, referred to as alignment) and binding operations (hereinafter, referred to as stapling process) of a sheet bundle accumulated on the tray. While a sheet is being processed on the processing tray, subsequent sheets cannot be sent to the processing tray, and therefore the sheets discharged from the image forming apparatus are temporarily stored in the sheet processing apparatus until the processing on the processing tray is completed. However, some apparatus have been devised so as not to reduce the productivity of the entire system.[0003]For example, according to the sheet process...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B65H29/66G03G15/00B65H37/04B65H29/60
CPCG03G15/6541B65H29/60B65H37/04G03G15/6529B65H29/145B65H31/02B65H2301/4212B65H2301/4213B65H2301/4454B65H2301/44552B65H2404/632B65H2405/11151B65H2601/522B65H2801/27G03G2215/00675
Inventor MITA, TAKUROSUGAI, NOBUTOSHI
Owner CANON KK